Triazine and pyridine fiber reactive azo dyestuffs



United States Patent US. Cl. 260153 4 Claims ABSTRACT OF THE DISCLOSURE Water-soluble reactive dyestufis which are represented by the formula:

wherein This invention relates to new water-soluble reactive azo dyestuffs, to the methods of preparation thereof and to the use of such dyestuffs for colouring textile materials.

It is known, for the purpose of colouring fibres containing hydroxyl groups, especially cellulose materials such as cotton and viscose rayon, to use dyestuffs containing groups able to react with hydroxyl groups of the cellulose molecule in the presence of acid-binding agents, especially at elevated temperatures. For this purpose, the dyestuffs are applied from aqueous solutions or aqueous printing pastes and, owing to a side-reaction in which the hydroxyl-reactive group reacts with water instead of the cellulose molecule, a considerable portion of the dyestuff does not fix on the fibre.

Consequently an excess of dyestulf must be used and the dyeings or prints must be thoroughly washed with boiling soap solutions to remove the unreacted dyestufi'. The wastage of dyestuff and extra processing make the dyeing or printing process more expensive, especially when deep shades are required.

The present invention is concerned with the production of water-soluble reactive dyestuffs which have a remarkably high fixation on the fibre and for which washing-oif treatments can be reduced considerably. It has been found that such properties occur in certain azo dyestuffs having at least benzene or naphthalene nucleus bearing two amino groups each of which, in turn, carries a group capable of entering into reaction with the hydroxyl groups of the cellulose, there being at least 3 such substituted amino groups in the molecule.

3,446,790 Patented May 27, 1969 The new dyestuffs of the invention are represented by the formula:

wherein:

A is an aromatic radical,

B is a benzene or naphthalene radical which can bear other substituents,

X, Y and Z stand for groups capable of entering into reaction with the hydroxyl groups of cellulose,

m, n and p stand for intergers of at most 6, q is 1 or 2 and which contain at least 2 sulphonic acid groups.

As examples of aromatic radicals represented by A, there can be mentioned, for example, benzene, and naphthalene radicals, also aromatic radicalscontaining more than one benzene or naphthalene nucleus, for example diphenyl, diphenyloxide, diphenylamine, stilbene, azo-benzene and phenylazonaphthalene radicals, also aromatic radicals containing a heterocyclic nucleus, for example, benzthiazole or naphthatriazole radicals. The aromatic radicals can carry substituents, for example, chlorine and bromine atoms, hydroxyl, amino, methyl, alkoxy, nitro, acylamino, alkyland aryl-carbonyl, carboxylic ester, carbamyl, carboxylic acid, alkyland aryl-sulphonyl, sulphamyl and sulphonic acid groups, as well as, if desired, additional groups of the kind represented by in Formula 1 above.

The benzene or naphthalene nucleus represented by B can also carry substituents of the kind indicated in the preceding paragraph. The depicted nitrogen atoms are preferably attached to the 1, 2 and 4 positions of the benzene or naphthalene nucleus.

As examples of groups which are represented by X, Y or Z, there may be mentioned, for example, the radicals of cup-unsaturated aliphatic carboxylic acids such as acrylic acid, u-chloroacrylic acid, propiolic acid, maleic acid and monoand di-chloromaleic acids; more particularly X or Y may represent the radical of an acid which contains a labile halogen atom or a group which readily splits off to form an anion, for example, the radical of a halogenated aliphatic acid such as chloroacetic acid, ,8- chloro and fl-bromo-propionic acids and a,fi-dichloropropionic acid or more especially, a heterocyclic radical which contains from 2 to 3 nitrogen atoms in the heterocyclic ring and at least one labile substituent on a carbon atom of the ring. By a labile substitutent there is meant an atom or group which is bound to a carbon atom or ortho position to a nitrogen atom of the heterocyclic ring which atom or group is readily replaced by a hydroxyl group under aqueous alkaline conditions.

As example of such heterocyclic radicals, there may be mentioned, for example 2,3-dichloro-quinoxaline-5- or -6-sulphonyl, 2,3-dichloro-quinoxaline-5- or -6-carbonyl, 2,4-dichloro-quazoline-6- or -7-sulphonyl, 2,4,'6,-trichloroquinazoline-7- or 8-sulphonyl, 2,4,7- or -2,4,8-trichloroquinazoline -6-s'ulphonyl, 2,4 dichloroquinazoline 6- carbonyl, 1,4-dichlorophthalazine-6-carbonyl, and, more particularly s-triazine-Z-yl and pyrimidin-2-yl or -4-yl radicals which contain on at least one of the remaining 2,4 or 6 positions, a bromine or, preferably, a chlorine atom, a sulphonic acid group, .a thiocyano group, and aryloxy or arylthio group containing an electronegative substituent such as sulphophenoxy, sulphophenylthio,

nitrosulphophenoxy, clisulphophenoxy and sulphonaphthoxy; or a group of the formula:

wherein Y represents the group of atoms necessary to form a or 6-membered heterocyclic ring which may carry substituents or form part of a fused ring system; or a quaternary ammonium or pyridinium group; or a group of the formula:

wherein R and R each represents the same or different alkyl, cycloalkyl, aryl or aralkyl groups, or R and R together form, together with the nitrogen atom, a 5- or 6- membered heterocyclic ring; or a group of the formula:

R4 wherein R and R6, may be the same or different and each represents a hydrogen atom or an alkyl, aryl or aralkyl group.

In the cases where the pyrimidine ring or triazine ring carries only one such labile substituent, the said ring may have a non-labile substitutent on the remaining carbon atom or atoms.

By a non-labile substitutent there is meant a group which is bound by a covalent bond to a carbon atom of the triazine or pyrimidine nucleus, which covalent bond is not ruptured under the conditions used for application of the reactive dye. As examples of such substituents, there may be mentioned, for example, primary amino and and hydroxyl groups, also monoor di-substituted amino groups, etherified hydroxyl and etherified mercapto groups; in the case substituted amino groups, this class includes, for example, monoand di-alkylamino groups in which the alkyl groups preferably contain at most 4 carbon atoms, and which may also contain such substituents as chloride atoms or hydroxyl, alkoxy or sulphate groups; and phenylamino and naphthylamino groups preferably containing sulphonic acid substituents; in the case of etherified hydroxyl and mercapto groups, this class includes, for example alkoxy and alkylthio groups, preferably those of low molecular weight, i.e. having up to about 4 carbon atoms and phenoxy, phenylthio, naphthoxy or naphthylthio groups; as particular examples of all these classes there may be mentioned, for example, methylamino, ethylamiuo, dimethylamino, B-hydroxyethylamino, di-(,B- hydroxyethyl)amino, flchloroethylamino, cyclohexylarnino, anilino, sulphophenylamino, disulphophenylamino, N-methyl-sulphophenylamino, Nfl-hydroxy-ethyl-sulphophenylamino, carboxyphenylamino and sulphocarboxyphenylamino, methoxy, ethoxy and butoxy, phenoxy, methylphenoxy, chlorophenoxy and phenylthio groups. Chlorine atoms or cyano, nitro, carboxy or carbalkoxy groups in the 5-position of a pyrimidinyl radical come into the category of non-labile substitutents.

According to a further feature of the invention there is provided a process for manufacture of new azo dyestuffs which comprises interacting an azo compound of the formula:

n-1 2p-1 wherein A, B, m, n, p and q have the meanings stated above, with (q-l-Z) molecular proportions of a reactant suitable for replacing a hydrogen atom of an organic amine by a group capable of reaction with the hydroxyl groups of cellulose with formation of a covalent bond between the dyestuif and the cellulose molecule, e.g. the

acid halide or anhydride of an acid which contains such a group.

Throughout this specification the term a reactant as herein defined is used to refer to such a reactant.

In a modification of the above process, an azo compound of the formula:

jq NH.Cn-rH2n-i wherein A, B, Z, m, n and q have the meanings stated above, is reacted with 2 molecular proportions of a reactant as defined above.

In a second modification of the above process, an azo compound of the formulaz NH.Y 7

wherein A, B, Y, Z, m and q have the meanings stated above is reacted with 1 molecular proportion of a reactant as defined above.

The treatment of the azo compound with the reactant can conveniently be carried out by stirring an aqueous solution of the compound with an aqueous suspension or solution of the reactant; the temperature of the reaction can be varied from 0 to C. and must be chosen with due regard to a side reaction in which water reacts with the reactant and hydrolyses the group capable of reacting with the fibre.

As examples of reactants which may be used, there may be mentioned, for example, the anhydrides or acid halides of cup-unsaturated aliphatic acids such as chloromaleic anhydride propiolyl chloride and acrylyl chloride, the acid chlorides of halogenated aliphatic acids such as chloroacetyl chloride, sulphochloroacetyl chloride, B-bromo and fi-chloropropionyl chloride and a,;3-dichloropropionyl chloride, and preferably, heterocyclic compounds which contain at least 2 nitrogen atoms in the heterocyclic rings and which contain 2 or more halogen, especially chlorine, atoms in the ortho position to the nitrogen atoms, such as 2,3-dichloro-quinoxaline-S- and -carboxylic acid chloride, 2,3-dichloro-quinoxaline-5- and 6-sulphonyl chlorides, 2,4- dichloro-quinazoline-6- and 7-sulphonyl chlorides, 2,4,6- trichloro-quinazoline-7- and 8-sulphonyl chlorides, 2,4,7- and 2,4,8-trichloro-quinaZoline-6-sulphonyl chlorides, 2,4- dichloro-quinazoline-fi-carboxylic acid chloride, 1,4-dichloro-phthalazine-6-carboxylic acid chloride, 2,4,6-tribromo and tri-chloro-pyrimidines, 2,4,5,6-te'trachloropyrimidine, 5-methyl-2,4,6-trichloropyrimidine, S-nitro- 2,4,6-trichloropyrimidine, 2,4-dichloro-5-nitro-6-methylpyrimidine, 2,4 dichloro 5 nitropyrimidine, 2,4,6 trichloro 5 cyanopyrimidine, 5-carboethoxy-2,4-dichloropyrimidine, 5-carboxy-2,4-dichloro-pyrimidine, cyanuric bromide and, perferably cyanuric chloride and the primary condensation products of cyanuric bromide or cyanuric chloride with ammonia, an alkali metal sulphite or thiocyanate or an organic mercaptan, hydroxy compound or an organic primary or secondary amine, for example methanol, ethanol, iso-propanol, phenol, o-, mand pchlorophenols, o-, mand p-cresols, 0-, mand p-sulphophenols, thiophenol, thioglycollic acid, dimethyldithiocarbamic acid, mercaptobenzthiazole, thioacetamide, methyl-, dimethyl-, ethyl-, diethy1-, n-propyl, iso-propyl-, butyl-, hexylor cyclohexylamine, toluidine, piperidine, morpholine, methoxyethyl-amine, ethanol-amine, aminoacetic acid, aniline-2:5-, 2:4 and 3:5-disulphonic acids, orthanilic, metanilic and sulphanilic acids, 2,3 and 4-aminobenzoic acids, 4- and 5-sulpho'2-aminobenzoic acids, 5- amino-Z-hydroxybenzoic acid, 2-aminoethanesulphonic acid, aminonaphthalene monoand di-sulphonic acids and N-methylarninoethane sulphonic acid; also, the secondary condensation products of cyanuric chloride with alkali metal sulphites, alkali metal thiocyanates, phenols and NR and H-S-C wherein Y, R R R and R have the meanings stated above.

Azo compounds of Formula 5 suitable for use for manufacture of the new dyestuffs can be obtained, for example, by diazotising a dinitro aniline, coupling the resultant diazonium compound with a coupling component containing at least one amino group, and reducing the nitro group to amino. It is preferred, however, to use azo compounds obtained by coupling aromatic diazonium compounds containing an acetylamino group with a coupling component having a benzene or naphthalene nucleus carrying two amino groups, more especially a coupling component of the formula:

NH. Ctr-IEIn-l N ELQl-iHzm-i in which the benzene or naphthalene nucleus can carry additional substituents, and hydrolysing the resultant compound.

Other suitable azo compounds can be obtained by coupling tetrazotised aromatic diamines with two moles of such a coupling component.

As examples of coupling components of Formula 8 or Formula 9, there may be mentioned, 1,3-diaminobenzene, 3-methylaminoaniline, Z-methyland 2-methoxy-lz3-diaminobenzene and 1:3, 1:5- and 1:7-naphthylenediamines.

There can alternatively be used a monoacyl derivative of a coupling component of Formula 8 or 9, the resultant azo compound being hydrolysed to remove the acyl group.

As examples of aromatic amines or their monoacyl derivatives which can be used for preparation of azo compounds of Formula 5, there may be mentioned 4,4- diaminostilbene-2,2'-disulphonic acid, 4,4'-diaminodiphenyl-2,2'-disulphonic acid, 4-acetylamino-4'-aminostilbene- 2,2-disulphonic acid, 6-N-acetylamino-2-aminonaphthalene-4:8-disulphonic acids and 4-N-acetylamino-1-aminonaphthalene-6- (and 7) sulphonic acids, also amino azo compounds obtainable by coupling the diazonium salts of such aromatic amines with coupling components containing a diazotisable amino group, for example Z-methoxy- S-methylaniline, 2:5-dimethoxyaniline, Z-methoxyaniline, Z-carboxyaniline, 2-methylaniline, 3-methylaniline, 3- ureidoaniline, 3-acetylaminoaniline and 1-naphthylamine- 6- and 7) sulphonic acids.

The azo compounds of Formula 6 can be obtained by condensing an aromatic polyamine of the formula (NH ANH with q moles of a reactant as herein defined, diazotising the resulting aromatic monoamine, and coupling the resultant diazonium compound with a coupling component of Formula 8 or Formula 9.

The azo compounds of Formula 7 can be obtained by condensing an aromatic polyamine of Formula 10 with q moles of a reactant as herein defined, diazotising the resultant aromatic monoamine, and coupling the resultant diazonium compound with a coupling component of the formula:

As examples of polyamines of Formula 10, there may be mentioned 2,6 diaminonaphthalene-4,8-disulphonic acid, m-phenylene diamine and 1,3-phenylene diamine-4 sulphonic acid, also the aminoazo compounds obtainable by diazotising the monoacyl derivative of an aromatic diamine, of which a number of examples have been mentioned above, coupling the product with a coupling component containing a diazotisable amino group, of which a number of examples have been mentioned above, and hydrolysing the resultant product.

The coupling components of Formula 11 can be obtained by reacting a diamine of the formula H. 1'3 --NH. O n-rHzn-i NH: for example, m-phenylene diamine, 3-methylamino aniline, Z-methyland Z-methoxy-1,3-diaminobenzenes and 1,3-, 1,5- and 1,7-naphthylene diamines, with one mole of a reactant as herein defined.

In yet a further modification of the process of the invention, the dyestuifs of Formula 1 in which A, B, m, n, p and q have the meanings stated above the X, Y and Z stand for 2-chloro-s-triazin-6-yl groups in which the 4 position of the triazine nucleus carries an amino or substituted amino group, are obtained by reacting a dyestutf of Formula 1 in which A, B, m, n, p and q have the meanings stated above and X, Y and Z each stands for a 2,4-dichloro-s-triaZin-6-y1 group with (q+2) moles of ammonia or an amine.

The new azo dyestuffs can be isolated by customary techniques for the isolation of water-soluble dyestuifs, for example by spray-drying or by precipitating the dyestuffs in the form of its sodium salt by adding sodium chloride to the reaction medium and filtering oif and drying the resultant precipitate.

The new azo dyestuffs of the invention are valuable for colouring cellulose textile material such as cotton, linen and viscose rayon. For colouring the cellulose textile materials, the new azo dyestuffs can be applied by either a dyeing or a printing process, preferably in conjunction with a treatment with an acid-binding agent such as sodium carbonate or bicarbonate or a substance such as sodium trichloroacetate which on heating liberates an acid-binding agent, the said treatment being carried out before, during or after the application of the dyestulfs. When so applied to cellulose textile materials, the new azo dyes yield shades which possess excellent fastness to wet treatments such as washing and are distinguished by the efliciency with which the dyestuff reacts with the cellulose molecule.

The invention is illustrated but not limited by the following examples in which the parts are by weight:

Example 1 16 parts of the disodium salt of the triaminoazo compound obtained by coupling diazotised 6-acetylamino-2- aminonaphthalene-4:8-disulphonic acid with m-aminoacetanilide in acid medium and subsequently hydrolysing to split the acetylamino groups, are dissolved in 200 parts of water and the solution is added to a solution of 36 parts of the sodium salt of 2:4-dichloro 6 (3-sulphophenylamino)-s-triazine in 200 parts of water and parts of acetone. The mixture is heated at 45-50 C. for 5 hours, the pH being maintained at 7 by the addition of a 10% aqeous solution of sodium carbonate. The mixture is treated with 10% potassium chloride, filtered and the residue on the filter is then dried.

The dyestuff composition, so obtained, contains 3 atoms of hydrolysable chlorine per molecule. When applied to cellulose textile materials in conjunction with a treatment with an acid-binding agent, the dye has excellent fixation and yields reddish-yellow shades having very good fastness to washing to light. For example, when viscose rayon is treated at a liquor: goods ratio of 30:1 at 80 C. in the presence of 30-45 g./l. of salt for 30 minutes, thereafter 10 g./l. sodium carbonate is added and to a suspension of 3.7 parts cyanuric chloride in 40 parts acetone and 40 parts of water. The mixture is stirred for 1 hour below C. the pH of the solution being maintained at 7 by the gradual addition of aqueous solution of sodium carbonate. A solution of 2.2 parts indyeing contained for 2 hours, about 95% oi the dyestuff 5 phenylenediamine in 150 parts of water is then added fixes. dropwise. The mixture is heated to 30 C. for /2 hour Example 2 the pH of the solution being maintained at 7 by the addi- A solution of 18.78 parts of the disodium salt of the of aqueous solution disazo compound obtained by coupling one molecular pro- 10 A 9 parts 9 h Salt of portion of tetrazotised benzidine 2:2 disulphonic acid phenylenedlannhe '4'sulphomc h 50 parts of Wate,r with two molecular proportions of 1:3-phenylenediamine 13 adhed hropwlse to a suspehsloh of Parts cyanunc in acid medium, in 250 parts of water is added to 31 soluchlond? Phrts of acetone 40 Harts of water" tion of 41.16 parts of the sodium salt of 2::4-dichloro-6- The mlxhlre h 1 hour below 5 the pliof r ph ph y i i i in a mixture of 150 15 the solution belng maintained at 7 by the gradual addition parts of Water and 170 parts of acetone. The mixture is of 10% aqueous solution of sodlum carbonate. To the stirred for 3 hours at 45400 the PH of the mixture mixture is then added 10 parts of a 2 N aqueous solution being maintained at 7 by the addition of a 10% aqueous of h 'h f by f ts of cghcfhhated solution of sodium carbonate. 80 parts of sodium chloride hydrofhlor The hhxhh'e 1S ,Shrred 0 f for are added and the compound which is precipitated is filt- 3O mlhhtes; theh the exces? ohhhrous f 1S {emoved cred OE and is then dried by the addition of sulphamlc acld. The mixture 18 added The dyes'tuff composition so obtained contains 3.6 Wlth f p tlrrltlg, below 5: 9., to the solution of atoms of hydrolysable chlorine per molecule. When up 1 i chloro'6 'Ihetahlhho4 :3 h 'ylahhho) plied to cellulose textile materials in conjunction with a 3ammobehhehe and then the PH rfhsed to by the teratment with an acid-binding agent, the dye has excelgradual addmqn of l o% aqueohs Sohlhoh h h lent fixation and yields reddish yeuow shades having Very bon-atiatThe mixture is stirred for 2 hours until coupling is ood fastness to washin and to li ht. Comp 6 g g a A solution of 6.0 parts of the disodrum salt of aniline- Example 3 3:5-disulphonic acid in 60 parts of water is added below 6-acetylamino-2-naphthylamine4z8-disulphonic acid is a Suspension of PartS cyanuflc chlofifie in coupled with one molecular proportion of m-phenylene- Pa Of acetonfi and 40 Parts Of Water. The mixture is di i i id di d h acetylaminoi gr up is onstirred for 1 hour below 5 C. the pH of the solution being verted to amino by hydrolysis with hydrochloric acid. A maintained at 7 by the gradual addition of 10% aqueous solution of 12 parts of the disodium salt of the triamine solution of sodium carbonate. To this solution is added monoazo compound so obtained in 200 parts of Water is the monoazo suspension. The mixture is heated for 2 added grafluany Q to 21 5115135151011 of Parts hours at C. the pH of the solution being maintained of cyamlflc chloride 1!! Parts acetofle Parts of at 7 by the gradual addition of 10% aqueous solution of Water and P of F The mlxhhfi 1S surfed for 3 sodium carbonate. The dyestufi is precipitated by addition hours and 15 than heutrahsed to 5 7- 40 of parts of sodium chloride and isolated by filtration. the addition of 3O parts of a 1.0% aqueous so noon 0 The filtercake is washed with 50 parts of acetone and sodium carbonate. A solutlon of 16.8 parts of the sodium dried salt of Z-methyl-S-sulphoaniline in parts of water is added to the above mixture and the latter is stirred at 45- The dyesmh contains atoms of hydrolysabl? ch10 C. for 3 hours the pH being maintained at 7 by the rme per molecule. When applied to cellulose textile maaddition of a 10% aqueous solution of sodium carbonate. 45 5 conlhnctlon treatmmt Wlth 361d- The dyestutf composition so obtained contains 2.87 bmdms agent, h y w s orange shades havmg good atoms of hydrolysable chlorine per molecule. When apfasmess t0 Washlng and t0 g plied to cellulose textile materials in conjunction with an The following table gives the shades of further new acid-binding agent the dyehas excell nt fiX on and y l dyestufis of the invention obtained as described in Exreddish-yellow shades having very good fastness to wash- 50 amples 1 d 2 b Condensing h polyamino azo ing and To llghtpound named in the first column with the heterocyclic Exampla 4 compound (B) named in the second column of the table, A solution of 3.9 parts of the sodium salt of metanilic using one molecular proportion of the latter fo h acid in 50 parts of water is added dropwise below 5 C. amino group present in the polyamino azo compound.

Example Polyaminoazo compound Hetorocyclle compound (B) Shade 5 4:4'-his(2:4"diaminophenyl-1"-azo)- 2:4-dichlor0-6-(3-sulphophenylamino)- Reddish-yellow.

diphenyl-2:2'-disulphonic acid. s-triazine (4 mols). 6 6-amin0-2(2':4-diaminophenylazo)- 2:4-dlchloro-6-(4-sulphopheny1amino)- Do.

naphthalene4:S-disulphonio acid. s-triaziuo. 7 rln 2:4-dichlor0-6-(2-methyl-5-sulpho- Do.

phenylamino)-s-t:riazine. 3 fln 2:4-dichloro-6(2-methyl-4-sulpho- Do.

phenylamino)-s-triazine. 9 d n 2 :4-dichloro-6- (2'-carb oxy-4-sulpho- Do.

phenylamino)-s-triazine. 10 do 2:4-dichloro-6-(3:5-disulphophenyl- Do.

amino)-s-triazine. 11 2:3:4-trlamino-6-sulpho-1:1'-azobenzene-.. 2:4-lichloro-6-(3-sulphophenylamino)- Do.

5- 11911116. 12,... n 2:4-dichloro-6-(4-sulphophenylumino)- Do.

s-triazlne. 13 do 2:4-di0blor0-6(3:5-dlsulphophenyl Do.

amino)-s-triazine. 14 2:4;4-triamino-6-sulpho-1:1-azobenzene 2:4-liehlor0-6-(3-sulphophenylarnino)- Do.

5- I1 Z1116. 15 2:4-di hloro-B-(2-methy1-5'-sulph0- Do,

pheny1amlno)-s-triazine. 16 fi-amino-Z-(Z:4-diaminophenylazo)- 2:4-dibromo-Et(3'-su1phophenylamino)- Do.

naphthalene-4: S-disulphouic acid s-triazine. 17 4-amino4-(2:4-diaminophenylnzo)- 2:4-dichloro-6-(3'-sulph0phenylnmino)- Do.

stilbene-2:2"dlsulphonie acid. s-triazine.

Example Polyaminoazo compound Heterocyclic compound (B) Shade 18 do 2:4-d1chloro-6-(3':5-disu1phophenyl- D0.

amino)-s-trlaztne. 19 do 2;4-diehloro-6-(2-methyl-5-sulpho- Do.

phenylamino)-s-triazlne. 20 6-amlno2-(2:4-dlamino-3-methylphenyl- 2:4-dichloro-6- -sulphophenylamlno)- Do.

azo)naphtha1ene-4:8-disu1phonic acid. s-triazlne. 21 6-amino-2- -amlno-4-N-methylamln0- ...d Do.

pheinylazomaphthaleno t:B-dlsulphonlc 8C1 22 1-amin0-4-(2:4-dlaminophenylazo) 2:4-dtchloro-6-(3'-sulphophenylam1no)- Orange.

naphthalene-7-sulphonic acid. 5 trlazine. 23 2-[2:5-dimethyl-4(2:4-dlaminophenyl- 2:4-dichl0ro-6-(3:5-dlsulph0phenyl- Do,

azo) phenylaz01-6-aminonaphtha1ene-4: 8- amino) -s-triazine. disulphonic 201d. 24 2-[4'-(2", -diaminopheny1azo)2-amlno- 2,4-dlch1oro-l?(3-sulphophenylamtno)- Brown.

phenylazo]-6-aminonaphthalene-4,8- s-trlazine. disulphonic acid. 25 do 2,4-dlchloro-6- -methyl-5-sulpho- Do.

phenylamlno)-s-trlaz1ne.

Example 26 I claim:

6-amino-2-(5'-cyano-2:6'-dichloropyrirnidin-4-ylamino) naphthalene-4:8-disulphonic acid is diazotised and coupled with an equimolecular proportion of m-phenylenediamine in acid medium. A solution of 6.5 parts of the disodium salt of the monoazo compound so obtained in 100 part-s of water is added with stirring to a suspension of 6.4 parts of 2-(3'-sulphophenylamino)-4:6-dichloro-s-triazine in 40 parts of acetone and 80 parts of water. The mixture is heated at 40 C. for 3 hours the pH being maintained at 7 by the addition of a 10% aqueous solution of sodium carbonate. parts of sodium chloride are added, the mixture is filtered and the residue on the filter is then dried.

The dyestufi? composition so obtained contains 3.3 atoms of hydrolysable chlorine per molecule. When applied to cellulose textile materials in conjunction with a treatment with an acid-binding agent the dye yields red- '1. The water-soluble reactive dyestuffs \which are represented by the formula:

wherein A is an aromatic radical selected from the class consisting of disulphonaphthylene, sulphophenylene, sulphonaphthylene, disulphostilbene, phenyleneazo-disulphodiphenylene and phenyleneazo-disulphonaphthylene;

B is a radical selected from the class consisting of mphenylene and m-tolylene; X, Y and Z are independently selected from the class dish-yellow shades having good fastness to washing and consisting of dichloro-s-triazine, monochloro-methto light. oxy s-triazine, monochlorosulphoanilino-s-triazine, The followmg table gives the shades of further exmonochloro-sulphotoluidino-s-triazine,monochloro- :amples of the new dyestutfs of the lnvention obtained by carboxysulphoanilino s triazine, monochloro-dithe general method of Example 26 by coupling the diazo- 4O sulphoanilino s-triazine, cyanodichloropyrimidinyl, mum salt of the amino compound named in the second and trichloropyrimidinyl; column of the table with the coupling component named m, n and p stand for integers of at most 6, q is 1-2; m the third column and condensing the amino azo comand which contain 2-8 sulphonic acid groups. Example Diazonium salt of the amino compound Coupling component Acylating agent Shade 27 6-amino-2-(5-cyan0-2:6-dichloro- 1:3-diaminobenze o ;4-

pyrimid n4 y am no) ap ha e e n 2 afiis glt ijgiilf' dlsulphophenyl Reddlsh yellow. 4:8-disulphonic acid. 28 do i 2-m hyl1:3-diamino- 2:4-dichloro-6-(3:5-disulphophenyl- Do.

benzene. amino)-s-triazino. 29 6-am1no-2-(fiehloropr pwnv amgn 1:3-d1ammobenezene 2;4-dichloro-6-(3-sulphophenylamino)- D0 30 6 naptha2l(e2ne;: i1sui1phon1c acid.d I s-triazine.

EIIllI10- -ric oro-py'rimi in-4- .do 2; l L

ylaninohiaphthaleneiz8-disulphonic 6 (3 sulphophenylammo) 3.01 31 6-amino-2(4'4:hlore-6-methoxy-triazin-2- do 2;;4-d hl -6- ylaninomaphthalenetzS-disulphonic amifiw tria in e. dlsulpnophenyl D0. 3.01

pound so obtained with an equivalent proportion of the acylating agent named in the fourth column of the table.

2. A water-soluble dyestuif represented by the formula:

1 1 1 2 3. A water-soluble reactive dyestuif represented by the 4. A Water-soluble reactive dyestufl represented by the formula: formula:

31 50 B 01 c\ c fiiO H I? 5 f 1TI'HC\ C-NH 01 SiO H I IH-( IJ \N/ N:NH 01-? (ll-NH N=N -N=N N 10 I II S0 11 NH 01-0 CNH NH $0311 I g I 01 s0 H I I E 3 i/ 01-0 I3-s03r1 15 01-0 L-NH References Cited UNITED STATES PATENTS 3,349,074 10/1967 Andrew 260-146 CHARLES B. PARKER, Primary Examiner.

D. M. PAPUGA, Assistant Examiner.

US. Cl. X.R. 

